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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Institute of Industrial Engineers
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Korean Institute of Industrial Engineers
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Volume & Issues
Volume 39, Issue 6 - Dec 2013
Volume 39, Issue 5 - Oct 2013
Volume 39, Issue 4 - Aug 2013
Volume 39, Issue 3 - Jun 2013
Volume 39, Issue 2 - Apr 2013
Volume 39, Issue 1 - Feb 2013
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Modeling and Simulation Methodology for Defense Systems Based on Concept of System of Systems
Kim, Tag Gon ; Kwon, Se Jung ; Kang, Bonggu ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 450~460
DOI : 10.7232/JKIIE.2013.39.6.450
A complex system such as defense systems is in a form of System of Systems (SoS) in which each component is a system being independent of other component systems. Dynamical behavior of SoS is represented by a composition of behaviors of component systems. Thus, a M&S tool/environment would not be efficient for development of heterogeneous models nor for simulation in a centralized environment. Moreover, such an environment restricts reusability and composability. This paper presents an interoperation method for M&S of defense systems as SoS. The approach first develops component system models using tools, each specialized to M&S of each component system. It then interoperates such simulations together to simulate a whole system as SoS. HLA/RTI is employed for such interoperation, which is a DoD/IEEE standard to support interoperation. We will introduce a case study for interoperable simulation of defense systems, which consists of a wargame simulator and a communication simulator.
Simulation-based Reliability and Maintainability Design of a Warship
Han, Young Jin ; Yun, Won Young ; You, Jea Woo ; Choi, Chung Hyun ; Kim, Hee Wook ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 461~472
DOI : 10.7232/JKIIE.2013.39.6.461
In this paper, we deal with a simulation-based reliability and maintainability design problem of a warship and want to determine the optimal values of MTBF and MTTR of all units and ALDT of the warship. The system availability and life cycle cost are used as optimization criteria and estimated by simulation. A hybrid genetic algorithm with a heuristic method is proposed to find near-optimal solutions and numerical examples are also studied to investigate the effect of model parameters to the optimal solutions and compare with a general genetic algorithm.
User Intervention for Controllable Engagement Simulation System
Ham, Won K. ; Chung, Yongho ; Park, Sang C. ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 473~479
DOI : 10.7232/JKIIE.2013.39.6.473
This paper introduces user intervention to control simulation states during the execution of a simulation for military engagements. In an engagement simulation, it covers both a discrete event system and a continuous state system. Thus a system for the engagement simulation can have numerous simulation states, because there are lots of factors to decide states of an engagement that are derived during an execution of the simulation (e. g. detection probability, moving speed, moving path, and so on). It means both a result and progression of simulations are important outputs. Configuration of an engagement simulation scenario and expectation of simulation states, though, is hindered by the number of generate-able states. In order to solve the obstacle, the engagement simulation system should be controllable by user intervention during a simulation execution. This paper is to define objects of user intervention, and to design control processes of defined objects.
Interface Design of the Simulator Having Engineering Components Model
Ahn, Byung-Jun ; Kwon, Seung-Man ; Wang, Ji-Hyun ; Pyun, Jai-Jeong ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 480~485
DOI : 10.7232/JKIIE.2013.39.6.480
This paper include the results of the software interface design for the ground vehicle simulators. This design allows us to upgrade the simulator easily by exchanging the engineering model when we need to change the function of algorithm or data of a simulator. That is because a main part of simulator is composed of reusable model.
M&S Verification, Validation and Accreditation Research Direction Considering the Characteristics of Defense M&S
Kim, Junghoon ; Jeong, Seungmin ; Hwang, Illhoe ; Cho, Hyunju ; Kim, Daeyoung ; Jang, Young Jae ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 486~497
DOI : 10.7232/JKIIE.2013.39.6.486
In this paper, we first present an in-depth survey of the research on Verification, Validation and Accreditation (VV&A) applied in various areas. Then we introduce the characteristics of the military and defense Modeling and Simulation (M&S) and propose the direction of method for VV&A with the identified characteristics. The M&S has been widely used in many different applications in the military and defense area including training, analysis, and acquisition. Methods and processes of VV&A have been proposed by researchers and M&S practitioners to guarantee the correctness of the M&S. The idea of applying the formal credibility assessment in VV&A is originated from the Software Engineering Reliability Test and Systems Engineering Development Process. However, the current VV&A techniques and processes proposed in the research community have not utilized the military-and-defense specific characteristics. We identify the characteristics and issues that can be found in the military and defense M&S. Then propose the direction of techniques and methods for VV&A considering the characteristics and issues. Also, possible research direction on the development of VV&A is proposed.
Modeling Combat Entity with POMDP and DEVS
Bae, Jang Won ; Lee, Kanghoon ; Kim, Hyeoneun ; Lee, Jun Seok ; Goh, Bongseok ; Nam, Bowon ; Moon, Il-Chul ; Kim, Kee-Eung ; Park, Jaehyun ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 498~516
DOI : 10.7232/JKIIE.2013.39.6.498
Combat Modeling and Simulation (M&S) is significant to decision makers who predict the next direction of wars. Classical methodologies for combat M&S aimed to describe the exact behaviors of combat entities from military doctrines, yet they had a limitation of describing reasonable behaviors of combat entities that did not appear in the doctrines. Hence, this paper proposed a synthesizing modeling methodology for combat entity models considering both 1) the exact behaviors using descriptive modeling and 2) the reasonable behaviors using prescriptive modeling. With the proposed methodology, combat entities can represent a reality for combat actions rather than the classical methodologies. Moreover, the experiment results using the proposed methodology were significantly different from the results using the classical methodologies. Through the analyses of the experiment results, we showed that the reasonable behaviors of combat entities, which are not specified in the doctrines, should be considered in combat M&S.
Guideline Construction through Case Study for Applying Crowdsourcing into New Product Development Environment
Kim, Han Jung ; Park, Joon Young ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 517~534
DOI : 10.7232/JKIIE.2013.39.6.517
In this study, we propose the guideline with strategic model for new product development. To establish the guideline, 1) we classify several types of successful surveyed cases that achieved open innovation through applying crowdsourcing into new product development environment, 2) draw case maps using two or three axis with characteristics such as: step of product development process, crowdsourcing frequency, and product type of each case, 3) define the type of applying crowdsourcing into new product development environment based on case analysis results, and tabulate a crowdsourcing type based on the defined crowdsourcing type, 4) finally, suggest the guideline with multiple points of view which embrace type of crowd, community management, participation method, knowledge adoption method, and reward policy. Using the suggested guideline will help a company to design and establish open innovation in new business model related to product development area.
Stock Trading Model using Portfolio Optimization and Forecasting Stock Price Movement
Park, Kanghee ; Shin, Hyunjung ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 535~545
DOI : 10.7232/JKIIE.2013.39.6.535
The goal of stock investment is earning high rate or return with stability. To accomplish this goal, using a portfolio that distributes stocks with high rate of return with less variability and a stock price prediction model with high accuracy is required. In this paper, three methods are suggested to require these conditions. First of all, in portfolio re-balance part, Max-Return and Min-Risk (MRMR) model is suggested to earn the largest rate of return with stability. Secondly, Entering/Leaving Rule (E/L) is suggested to upgrade portfolio when particular stock's rate of return is low. Finally, to use outstanding stock price prediction model, a model based on Semi-Supervised Learning (SSL) which was suggested in last research was applied. The suggested methods were validated and applied on stocks which are listed in KOSPI200 from January 2007 to August 2008.
Are Spring and Fall in South Korea Getting Shorter?
Kim, Dong Hyun ; Shin, Hayong ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 546~553
DOI : 10.7232/JKIIE.2013.39.6.546
A clear increase in the average annual temperature is observed worldwide, and climate changes take place in response to that increase. This affects not only the ecosystem, but also to mankind. Of all those aspects of climate change, people are especially interested in the length of each season, and people acknowledge that the duration of spring and fall has been shortened over the past several years. Still, it is difficult to observe this kind of phenomenon with the simple analysis of dividing the seasons and calculating the duration. Therefore, this study attempted to set up a more intuitive standard which well reflects the current situation. This study also divided the daily climate into 4 states using the daily maximum and minimum temperature. Moreover, using the Hidden Markov Model, this study calculated the duration of each season and analyzed its tendency based on the daily temperature data of the last 53 years (1960~2012). According to the result, the duration of spring and fall showed mild decreasing tendency over the past 53 years, and the duration of fall decreased even more during the past 30 years in the Korean peninsula. After 1960, the start of spring was advanced, which decreased the length of winter for about 11 days. On the other hand, the duration of summer increased for about 25 days, which is consistent with the worldwide tendency of temperature increase.
A Simultaneous Delivery and Pick-up Heterogeneous Vehicle Routing Problem with Separate Loading Area
Kim, Gak-Gyu ; Kim, Seong-Woo ; Kim, Seong-Woo ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 554~561
DOI : 10.7232/JKIIE.2013.39.6.554
As a special topic of the vehicle routing problems (VRP), VRPSDP extends the vehicle routing problem as considering simultaneous pickup and delivery for goods. The past studies have mainly dealt with a only weight constraint of a loading capacity for heterogeneous products. However. this study suggests VRPSDP considering separate loading area according to characteristics of loading species. The objective is to design a set of minimum distance routes for the vehicle routing assignment with independent capacity for heterogeneous species. And then we present a another HVRPSDP model which is easy to utilizes in a unique circumstance that is a guarantee of executing a task simultaneously from the various areas under restricted time and raising an application of vehicles that returns at the depot for the next mission like the military group. The optimal results of the suggested mathematical models are solved by the ILOG CPLEX software ver. 12.4 that is provided by IBM company.
Estimating Optimized Bidding Price in Virtual Electricity Wholesale Market
Shin, Su-Jin ; Lee, SeHoon ; Kwon, Yun-Jung ; Cha, Jae-Gang ; Moon, Il-Chul ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 562~576
DOI : 10.7232/JKIIE.2013.39.6.562
Power TAC (Power Trading Agent Competition) is an agent-based simulation for competitions between electricity brokering agents on the smart grid. To win the competition, agents obtain electricity from the electricity wholesale market among the power plants. In this operation, a key to success is balancing the demand of the customer and the supply from the plants because any imbalance results in a significant penalty to the brokering agent. Given the bidding on the wholesale market requires the price and the quantity on the electricity, this paper proposes four different price estimation strategies: exponentially moving average, linear regression, fuzzy logic, and support vector regression. Our evaluations with the competition simulation show which strategy is better than which, and which strategy wins in the free-for-all situations. This result is a crucial component in designing an electricity brokering agent in both Power TAC and the real world.
Analysis Framework using Process Mining for Block Movement Process in Shipyards
Lee, Dongha ; Bae, Hyerim ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 577~586
DOI : 10.7232/JKIIE.2013.39.6.577
In a shipyard, it is hard to predict block movement due to the uncertainty caused during the long period of shipbuilding operations. For this reason, block movement is rarely scheduled, while main operations such as assembly, outfitting and painting are scheduled properly. Nonetheless, the high operating costs of block movement compel task managers to attempt its management. To resolve this dilemma, this paper proposes a new block movement analysis framework consisting of the following operations: understanding the entire process, log clustering to obtain manageable processes, discovering the process model and detecting exceptional processes. The proposed framework applies fuzzy mining and trace clustering among the process mining technologies to find main process and define process models easily. We also propose additional methodologies including adjustment of the semantic expression level for process instances to obtain an interpretable process model, definition of each cluster's process model, detection of exceptional processes, and others. The effectiveness of the proposed framework was verified in a case study using real-world event logs generated from the Block Process Monitoring System (BPMS).
Military Logistics Consolidation Center Location Problem : Modeling and Analysis
Sim, Seungbae ; Jang, Jihong ; Jung, Hosang ; Jeong, Bongju ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 587~598
DOI : 10.7232/JKIIE.2013.39.6.587
In Korea military (KM), various military supplies are distributed to individual military units via three different multi-tier supply networks owned and operated by army, navy, and air force, respectively. Under the current supply networks, the chances for the occurrence of delayed supply, undersupply, and oversupply increase, and supply redundancy also can become a problem. Thus, KM is now trying to improve its current multi-tier supply networks by constructing logistics consolidation centers. Private companies operate logistics consolidation centers to effectively manage various types of inventories before delivering them to final customers. In this paper, we newly propose a mathematical model for building the optimized military supply network considering adopting the military logistics consolidation centers. Based on the real situation of KM, the proposed model was validated in terms of its feasibility, and it seems that the outcome (the location of the military logistics consolidation centers) of the proposed model can be one of the good alternatives for KM.
A Study on the Effect of Maintenance Organization over Maintenance Performance Index : Based on Paper Industry
Ku, Sung Tae ; Kim, Chang Eun ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 6, 2013, Pages 599~608
DOI : 10.7232/JKIIE.2013.39.6.599
This study is intended to propose optimal maintenance organization to process industry, especially paper industry by analyzing maintenance organization of paper industry and finding out how the maintenance organization and the allocation of maintenance resources influence maintenance performance indices here in this paper. In this study, we analyzed the maintenance organization in detail and studied correlation between maintenance organization and equipment failure rate for the major top six domestic paper-mills in market share. According to the study, the maintenance organization has been changed in accordance with its business environment, but its performance was different by both the allocation way of maintenance resources and the structure of maintenance organization. For paper industry, whose availability is the most important key index that determines the success or failure of a business, it turns out to be the most effective strategy that operates the combination maintenance combined central maintenance with area maintenance and allocates the maintenance resources mainly for preventive maintenance. In particular, it turned out to be that there is the strong positive correlation between the rate of shift workers and the equipment failure rate. The results of this study is not limited to paper industry, but expandable to other industry. So it is expected that the direction of the maintenance organization would be given to the company which is struggling to improve its availability.